@font-face { font-family: "Be Vietnam Pro Local"; src: url("../fonts/be-vietnam-pro-300-vi.woff2") format("woff2"); font-style: normal; font-weight: 300 500; font-display: swap; unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB; }
@font-face { font-family: "Be Vietnam Pro Local"; src: url("../fonts/be-vietnam-pro-300-latin.woff2") format("woff2"); font-style: normal; font-weight: 300 500; font-display: swap; }
@font-face { font-family: "Be Vietnam Pro Local"; src: url("../fonts/be-vietnam-pro-600-vi.woff2") format("woff2"); font-style: normal; font-weight: 600 900; font-display: swap; unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB; }
@font-face { font-family: "Be Vietnam Pro Local"; src: url("../fonts/be-vietnam-pro-600-latin.woff2") format("woff2"); font-style: normal; font-weight: 600 900; font-display: swap; }
@font-face { font-family: "Geist Mono Local"; src: url("../fonts/geist-mono-vi.woff2") format("woff2"); font-style: normal; font-weight: 100 900; font-display: swap; unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB; }
@font-face { font-family: "Geist Mono Local"; src: url("../fonts/geist-mono-latin.woff2") format("woff2"); font-style: normal; font-weight: 100 900; font-display: swap; }
:root { --paper: #f6f1e5; --ink: #151515; --blue: #1757d7; --red: #b52820; --yellow: #ffd43b; --muted: #67645d; --soft: #e8e1d2; --font-physics: "Be Vietnam Pro Local", "Segoe UI", sans-serif; --font-geist-sans: "Be Vietnam Pro Local", "Segoe UI", sans-serif; --font-geist-mono: "Geist Mono Local", ui-monospace, monospace; }
* { box-sizing: border-box; padding: 0; margin: 0; }
html { min-height: 100%; background: var(--soft); scroll-behavior: smooth; }
body { min-height: 100%; color: var(--ink); background: var(--paper); font-family: var(--font-physics), Arial, Helvetica, sans-serif; font-weight: 400; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
.site-frame { min-height: 100vh; overflow: hidden; }
.hub-site { --paper: #f4f1e9; --ink: #191b20; --blue: #344f9b; --red: #8f493d; --yellow: #e5bd59; --muted: #686a70; --soft: #e8e4da; color: var(--ink); background: var(--paper); }
.physics-site { --paper: #f7f3e8; --ink: #102c37; --blue: #0d687c; --red: #b54b34; --yellow: #e4bc66; --muted: #5d6c6b; --soft: #dfe9e6; color: var(--ink); background-color: var(--paper); background-image: radial-gradient(circle at 8% 16%, #94cbd01c 0 1px, transparent 2px), radial-gradient(circle at 91% 38%, #0d687c13 0 1px, transparent 2px); background-size: 38px 38px, 52px 52px; }
.physics-site :is(h1, h2, h3, .page-title) { font-family: var(--font-physics), Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 4px solid var(--yellow); outline-offset: 3px; }
::selection { color: var(--paper); background: var(--blue); }
.skip-link { position: fixed; z-index: 9999; top: 8px; left: 8px; padding: 10px 14px; color: var(--paper); background: var(--blue); border: 2px solid var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: relative; z-index: 20; width: min(1180px, calc(100% - 32px)); min-height: 76px; margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 28px; border-bottom: 2px solid var(--ink); }
.site-brand { display: inline-flex; align-items: center; gap: 12px; }
.site-brand img { display: block; width: 104px; height: auto; }
.hub-brand-mark { display: grid; width: 50px; aspect-ratio: 1; place-items: center; color: #f7f2e7; background: #191b20; border-radius: 12px; font: 850 .8rem/1 var(--font-geist-mono); letter-spacing: .05em; }
.site-brand-context { display: inline-flex; min-height: 30px; align-items: center; padding-left: 16px; border-left: 1px solid currentColor; font: 700 .94rem/1.25 var(--font-geist-mono); letter-spacing: .11em; }
.desktop-nav { display: flex; justify-content: flex-end; gap: 28px; font-size: 1rem; font-weight: 650; }
.desktop-nav a:hover, .site-footer a:hover { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: 8px; }
.icon-link, .mobile-menu summary { display: grid; width: 40px; height: 40px; place-items: center; border: 2px solid var(--ink); cursor: pointer; }
.icon-link:hover, .mobile-menu summary:hover { color: var(--paper); background: var(--blue); }
.mobile-menu { display: none; position: relative; }
.mobile-menu summary { list-style: none; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu nav { position: absolute; top: 48px; right: 0; display: grid; min-width: 210px; background: var(--paper); border: 2px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); }
.mobile-menu nav a { padding: 14px 16px; border-bottom: 1px solid var(--ink); font-weight: 750; }
.hub-site .site-header { min-height: 82px; border-color: #bab8b0; }
.physics-site .site-header { min-height: 82px; border-bottom: 1px solid #8fa5a2; }
.physics-site .desktop-nav { font-family: var(--font-physics); font-size: 1rem; font-weight: 500; }
.physics-site .desktop-nav a:hover, .physics-site .site-footer a:hover { color: var(--red); }
.physics-site .icon-link, .physics-site .mobile-menu summary { border: 1px solid #68817e; border-radius: 50%; }
.physics-site .icon-link:hover, .physics-site .mobile-menu summary:hover { color: var(--paper); background: var(--blue); }
.physics-site .hub-link { color: var(--muted); background: transparent; }
.immersive-landing { color: #eef6f6; background: #050a10; }
.immersive-landing .site-header { position: relative; z-index: 30; color: #eef6f6; background: #050a10d4; border-color: #81989b4d; backdrop-filter: blur(18px) saturate(1.2); }
.immersive-landing.hub-site .site-header { border-color: #7785aa4d; }
.immersive-landing .site-brand img { filter: brightness(0) invert(1); }
.immersive-landing .hub-brand-mark { color: #080b14; background: #dce4ff; }
.immersive-landing .site-brand-context { color: #9eacb5; }
.immersive-landing .desktop-nav { color: #bbc8ca; }
.immersive-landing .icon-link, .immersive-landing .mobile-menu summary { color: #eaf5f4; background: #07151c88; border-color: #7ca0a255; }
.immersive-landing.hub-site .icon-link, .immersive-landing.hub-site .mobile-menu summary { border-color: #8797c65c; }
.immersive-landing .mobile-menu nav { color: #eef6f6; background: #07151cf2; border-color: #789597; box-shadow: 6px 6px 0 #020709; }
.immersive-landing .mobile-menu nav a { border-color: #78959755; }
.immersive-landing .site-footer { position: relative; z-index: 3; width: 100%; margin: 0; padding: 58px max(24px, calc((100% - 1180px) / 2)) 28px; color: #809699; background: #02080b; border-top: 1px solid #6b8d9055; }
.immersive-landing.hub-site .site-footer { color: #81899e; background: #05070d; border-color: #65739855; }
.immersive-landing .site-footer__brand, .immersive-landing .site-footer nav { color: #dce7e6; }
.immersive-landing .site-footer__end { border-color: #627b7d44; }
.immersive-landing { color:#102c37; background:#f7f3e8; }
.immersive-landing .site-header { color:#102c37; background:#f7f3e8d9; border-color:#78908b61; }
.immersive-landing.hub-site .site-header { border-color:#78908b61; }
.immersive-landing .site-brand img { filter:none; }
.immersive-landing .hub-brand-mark { color:#f7f3e8; background:#176b77; }
.immersive-landing .site-brand-context,.immersive-landing .desktop-nav { color:#476967; }
.immersive-landing .icon-link,.immersive-landing .mobile-menu summary,.immersive-landing.hub-site .icon-link,.immersive-landing.hub-site .mobile-menu summary { color:#174d55; background:#fffdf0a8; border-color:#6589847d; }
.immersive-landing .mobile-menu nav { color:#102c37; background:#f9f6ecf5; border-color:#6f8c88; box-shadow:6px 6px 0 #58716d; }
.immersive-landing .site-footer,.immersive-landing.hub-site .site-footer { color:#667b78; background:#ede9de; border-color:#78908b55; }
.immersive-landing .site-footer__brand,.immersive-landing .site-footer nav { color:#153f45; }
.site-footer { width: min(1180px, calc(100% - 32px)); margin: 30px auto 0; display: grid; grid-template-columns: 1fr auto; gap: 28px; padding: 38px 0 24px; border-top: 5px solid var(--ink); color: var(--muted); font-size: .82rem; }
.site-footer__brand { display: flex; align-items: center; gap: 9px; margin-bottom: 9px; color: var(--ink); font: 900 1rem/1 var(--font-geist-mono); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 18px; color: var(--ink); font-weight: 700; }
.site-footer__end { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid #bdb7aa; font: 650 .7rem/1.5 var(--font-geist-mono); }
.page-shell { width: min(1180px, calc(100% - 32px)); min-height: 60vh; margin: 0 auto; padding: 44px 0 70px; }
.page-kicker { margin-bottom: 10px; color: var(--red); font: 800 .72rem/1.5 var(--font-geist-mono); letter-spacing: .12em; text-transform: uppercase; }
.page-title { max-width: 900px; font-size: clamp(2.6rem, 6vw, 5.2rem); line-height: .95; letter-spacing: -.07em; }
.page-intro { max-width: 760px; margin-top: 20px; color: var(--muted); font-size: 1.08rem; line-height: 1.65; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 9px; padding: 10px 15px; color: var(--paper); background: var(--blue); border: 2px solid var(--ink); box-shadow: 4px 4px 0 var(--yellow); font-weight: 800; cursor: pointer; }
.button:hover { color: var(--ink); background: var(--yellow); box-shadow-color: var(--blue); }
.button--secondary { color: var(--ink); background: var(--paper); box-shadow-color: var(--ink); }
.paper-panel { padding: clamp(20px, 4vw, 38px); background: var(--paper); border: 2px solid var(--ink); box-shadow: 7px 7px 0 var(--ink); }
.physics-site .page-kicker { color: var(--red); }
.physics-site .page-title { font-weight: 300; letter-spacing: -.045em; }
.physics-site .page-shell { position:relative; isolation:isolate; }
.physics-site .page-shell::before { position:absolute; z-index:-1; top:18px; right:2%; width:min(310px,42vw); aspect-ratio:1; content:""; border:1px solid #4d83832b; border-radius:50%; box-shadow:0 0 0 38px #5389840d,0 0 0 76px #53898408; }
.physics-site .page-kicker { color:#567873; font-weight:600; letter-spacing:.08em; text-transform:none; }
.physics-site .page-title { color:#103740; }
.physics-site .paper-panel { border: 1px solid #92a7a3; border-radius: 18px; box-shadow: 0 12px 35px #123b4412; }
.physics-site .button { background: var(--blue); border: 1px solid var(--blue); border-radius: 999px; box-shadow: none; }
.physics-site .button:hover { color: var(--paper); background: var(--red); border-color: var(--red); box-shadow: none; }
.physics-site .button--secondary { color: var(--blue); background: transparent; border-color: #78918e; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; } }
@media (max-width: 760px) {
  .site-header { min-height: 68px; gap: 10px; }
  .site-brand img { width: 90px; }
  .hub-brand-mark { width: 44px; }
  .site-brand-context { display: none; }
  .desktop-nav { display: none; }
  .header-actions { justify-self: end; }
  .mobile-menu { display: block; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer__end { grid-column: 1; }
  .page-shell { padding-top: 32px; }
}